3-[(3R,6S,9S,12S,15S)-6-(2-amino-2-oxoethyl)-3-[(2S)-2-[[(2S)-1-[(2-amino-2-oxoethyl)amino]-4-methyl-1-oxopentan-2-yl]carbamoyl]pyrrolidine-1-carbonyl]-12-[(2S)-butan-2-yl]-15-[(4-methoxyphenyl)methyl]-5,8,11,14,17-pentaoxo-1-thia-4,7,10,13,16-pentazacycloicos-9-yl]propanoic acid;2,2,2-trifluoroacetic acid